Manipulator for feed tables for rolling mills



C. H. HUNT.

IVIANIPULATOR FOR FEED TABLES FOR ROLLING MILLS.

APPLICATION FILED JAN. ELI-920.

Patented Jan. 10, 1922 3 SHEETS-SHEET I.

Lwsmsso "f l -J3 Im/m/or C. H. HUNT.

MANIPULATOR FOR FEED TABL'ES FOR ROLLING MILLS.

APPLICATION FILED JAN. 6, 1929.

Patented. Jan. 10, 1922,

Im/wlr C. Hi. HU NT.

MANIPULATOR FOR FEED TABLES- FOR ROLLINGMILL S.

APPLICATION FILED JAN. 6,1920.

Patented Jan. M), 11922.

3 SHEETS-SHEET 3.

CLINTON H. HUNT, E3 STE'UBENVILLE, OHIO.

MANIPULATOR TABLES ROLLING MILLS.

Application filed January 6, 1929.

To aZZ whom it may comer-n: g

Be it known that I, Cmrzron 1i. HUNT, a citizen of the United States, residing at Steubenville, in the county of Jefferson, and State of Ohio, have invented new and useful Improvements in Manipulators for Feed Tables for Rolling Mills, of which the following is a specification.

My invention relates to manipulators for rolling-mill feed-tables.

The object of this invention is to simplify and make more direct and effective the means for turning ingots, blooms, billets, slabs or the like upon feed-tables. This object is secured by providing a mechanism with fewer moving parts and consequently lighter moving masses than are known to me for accomplishing similar results The power required for overcoming the inertla of motion and rest is correspondingly reduced in my invention. The mechanism of this invention is comparatively simple to manufacture and easy to maintain in operation, and the parts thereof are very easy of access for repairs and replacement. Other objects are referred to hereinafter.

Referring to the accompanying drawlngs, Fig. 1 is a plan view of one or the many forms which my invention may take, a portion being broken away; Fig. 2, a vertical section on the line TTH on Fig. 1; Fig. 3, a section on the line HITTT on Fig 1; Fig. 4, an elevation of a part of the rlght hand end of Fig. 1, a portion belng 1n section; Fig. 5, an enlarged plan of a portion of Fig. l; and Fig. 6, an enlarged detail in vertical section, showing the table-end of one of the rack-bars. Fig. 7 is a view similar to Fig. 3 showing a sliding shoe in place of a roller having travel on the track.

On the drawings, 1 and 2 are parallel metal table girders 0r frames arranged at opposite sides of the feed table and supporting the ends of the feed-rollers 3 ar ranged at right angles to the said girders. The rollers are driven by any suitable means, for example, the usual bevel gears 5 driven by the shaft 4. i

6 and 7 are parallel metal guides arranged at opposite sides of the feed-table and just above the feed-rollers 3 and at right angles thereto. The inner guide 6 is connected by the bolts 8 to the upstanding portions 9 of three rack-beams 10, the sa1d portions extending up above the top of the feed-rollers Specification of Leters Patent.

IPatented Jan. 1%), 1922.

Serial No. 349,752.

The girder 2 has an upwardly-open slot 11 for each rack-beam 10, the table-end thereof resting therein when the beam is fully retracted. This end of each beam has a recess 12, in which a grooved wheel or roller 13 is held by a pin 14, the roller running in an inverted t -shaped track 15 located between and below a pair of consecutive rolls 3. The rollers 13 are covered by housings 16 for the front ends of the beams 10. The intermediate portions of these beams have on their under sides racks 17 which mesh with pinions 21 fixed on the shaft 18, mounted in housings 19 on the bedplate 20. The remaining ends of the beams 10 have the grooved wheels or rollers 22 which run on the inverted l-shaped tracks Each rack-beam 10 has, in its forward end just back of the housing 16, a vertical slot 2st in which is the lever 25 pivoted on the pin 27 carried by the side-members 26 of the beam at opposite sides of the slot as. Each lever has in front of the pin 27 an arcshapedslot to receive areduced portion 6 of the guide 6, this portion occupying the lower rear corner of the guide. See Fig. 2. Each guide 6 is recessed in front at 6 to receive the auxiliary member 28 of the lever 25, this member being detachable from the remainder of the lever and having its lower end connected to the main member of the lever by a dowel-pin 29 seated in opposed recesses in the two members of the lever. The upper end of the member 28 is secured to the main member of the lever by the removable pin 30. I The front side or edge of each member 28 has nose, lug, or finger 31 lying normally ielow the top of the rollers 3 adapted, when the lever is rotated to the right, to travel upwardly in front of the guide 6 and engage an ingot 32 or other article on the rollers and against theguide G and rotate it to the left ninety degrees. I lever has its fulcrum or pin 27'near the top of the table so that the finger 31 will have practically a minimum of travel horizontally and a maximum of vertical travel.

The u aper end of each lever 25 has a slot which receives the forward end of a link 33 connected to an upstanding arm 34 on the rock-shaft 35, journalled in bearings 36 on the upper side of the beams 10 near the rear ends of the latter. The shaft may be the bearings 49 on the bed-plate 20.

operated by any suitable power connected to the universal joint 37'.

The guide 7 is moved toward and away from the guide 6 by two rack-beams 38 having the portions 40 extending above the rollers 3. To these portions the guide 7 is secured by the bolts 39. The ends of the beams 38 carrying the guide 7 lie in the upwardly open recesses 41 in the girder l and between the housings 42 for the ends of the rollers 3. The forward ends of the beams 38 have each a recess for a grooved wheel or roller 43 running on an inverted \l-shaped track 44 below and between pairs of consecutive rollers 3 and turning on a pin 45. The intermediate portion of each beam 38 has on its under side a rack 46 meshing with a pinion 47 keyed to the shaft 48 turning in The shaft 48 may be operated by any suitable power. The rear ends of the rack-beams 38 have grooved wheels or rollers 50 running on inverted V-shaped tracks 51. The beams 38 travel in upwardly open slots 41" in the girder 6.

The rack-beams 10 and 38 of each pair have on their upper sides a pair of holddown rollers 52 carried by housings 53 rising from the bed-plate 20. These rollers prevent the beams from rising under the action of the pinions 21 and 47. The rollers and 55 and their covers have been removed.

This results in a large saving of space and a great deal of time. With the manipulator's known to me, practically the entire table has to be dismantled in order to allow the 'guide operati'ng beams to be removed or to be gotten to for repairs.

shoe 58 sliding on the track 15', the shoe taking the place of the roller 12 and its housing '16. By this construction the bar 10 may be left up between the rollers 3 without the removal of any of the latter.

It is one of the particular features of the constructionmade possible by my invention that the rack-beams do not extend beyond the table-girder on the working side of the table; that they are placed above the girders and connected directly to the guides; and that the application of power is such as to prevent the bending of the rack-beams. No levers or working parts are under the table or in scale-pits, where they would be subject to undue wear due to scale working into the moving parts. All supporting housings and bases are high relatively to the bottom of the girders, so that no deep pits are required around the table. All parts of the manipulator are accessible for inspection, oiling, repair and replacement. 7

I claim: 7 v

1. In a manipulator for feed-tables for rolling-mills and the like, a feed-table, a guide above the table, a beam secured thereto and reciprocable to cause the guide to travel transversely of the table, a lever carried by bearings on the upper side of the beam and having a portion thereof normally below the feed-table and adapted, when the lever is operated, to travel above the table and beyond the guide, and engage and move an article lying on the table, and means for reciprocating the beam and for operating the lever.

2. In a manipulator for feed tables for rolling-mills and the like, a feed-table, a

guide above the table, a beam having one end attached thereto and provided at its table-end with a vertical slot, a lever seated in the slot supported by the beam, and having beneath the level of the table a portion adapted when the lever is operated, to cause the rotation of an article lying on the table, and means for reciprocating the beam and for operating the lever.

-3.- In a manipulator for feed-tables for rolling-mills and the like, a feed-table, a guide above the 'table, a 'luralityof beam connected to dili'erent points longitudinally of the guide and "movable to cause the guide to travel transversely over the table, a lever carried by bearings on the upper side of each beam, each lever having a portion,

thereof adapted, when operated, to engage and rotate an article on the table, means for reciprocating allthe beams simultaneously, and means for operatin all the levers simultaneously.

4. In a manipulator for feed-tables for rolling-mills nd the like, a feed-table, a guide above the table, a plurality of beams connected to different points longitudinally of the guide and movable to cause the guide to travel transversely over the table, a lever carried by the table-end of each beam, each lever having a portion thereof adapted, when operated, to engage and rotate an article on the table, means-for reciprocating all the beams simultaneously, and'me'ans for operating all the levers simultaneously, the last named means being supported by the upper side of the beams.

5. In a manipulator for feed-tables for rolling-mills and the like, a feed-table, a guide above the table, said guide being movable transversely of the table and having a vertical slot in its guiding face, a lever pivoted to swing in the plane of the said slot and having an opening in which the guide is located and provided with a removable closure for said Opening movable up and down in the slot, and means carried by the said closure and adapted, when the lever is operated, to move upwardly in front of the guide and turn an article lying on the table.

6. In a manipulator for feed-tables for rolling-mills and the like, a feed-table, a guide having a reduced section provided with a vertical slot in the front edge thereof, and a lever having a slot and having an opening in which the guide is located to receive the said section and having a removable closure for said opening movable up and down in the vertical slot, the said member having a portion movable upwardly so as to engage an article on the table.

7. In a manipulator for feed-tables for rolling-mills and the like, a feed-table, a guide above the table, a beam for operating the guide and having a slot at its table-end, and a lever closed around the guide and working in the slot and having means for engaging and turning an article on the table when the lever is operated.

8. In a manipulator for feed-tables for rolling-mills and the like, a feed-table, a guide above the table, a beam for operating the guide and having a slot at its table-end, a lever closed around the guide and working in the slot and having means for engaging and turning an article on the table when the lever is operated, and means for removably securing to the main part of the lever that portion which lies in front of the beam and carries the engaging and turning means.

9. In a manipulator for feed-tables for rolling-mills and the like, a feed-table, a guide above the table, a beam secured there- .to and reciprocable to cause the guide to travel transversely of the table, a lever carried by the table-end of the beam and having a portion thereof normally below the feed-table and adapted, when the lever is operated, to travel above the table and beyond the guide, and engage and move an article lying on the table, and means for reciprocating the beam and for operating the lever, the said lever having its bearings at the upper side of the beam and above the table.

Signed at Pittsburgh, Pa, this 3rd day of January 1920.

CLINTON H. HUNT. 

